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                Almost                </h1>
                <p>时间限制：50s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：512MB</p>			</div>
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                                <h3>题目描述</h3><p><div id="pres" style="text-align: center; font-size: 14px; vertical-align: middle; font-weight: bold">
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<div id="pres" style="text-align: center; font-size: 14px; vertical-align: middle; font-weight: bold">
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<span id="1333781452646S" style="display: none">&nbsp;</span><span id="1333781452120S" style="display: none">&nbsp;</span><span id="1333781446592S" style="display: none">&nbsp;</span><span id="1333781446084S" style="display: none">&nbsp;</span></span>
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<p><span style="font-size: medium">定义n个数X1,X2,...Xn(n&gt;1)的几乎平均数为&Sigma;Xi/(n-1)<br />
对于给出的长度为N的一个序列S，要求回答Q个询问<br />
每个询问会给出L,R(1&lt;=L&lt;R&lt;=N)，请找出a与b(L&lt;=a&lt;b&lt;=R)使得Sa,Sa+1,Sa+2,...Sb的几乎平均数最大</span></p>
<p></p></p><hr/><h3>输入格式</h3><p><div id="pres" style="text-align: center; font-size: 14px; vertical-align: middle; font-weight: bold">
<div id="pcont1" style="margin-top: 20px; display: block">
<div class="pdcont" style="text-align: left"><span style="font-size: medium">　　第一行两个正整数N,Q<br />
　　第二行N个数表示序列S<br />
　　接下来Q行，每行两个数L,R<br />
</span></div>
<div class="pdcont" style="text-align: left"><span style="font-size: medium">　</span></div>
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</div></p><hr/><h3>输出格式</h3><p><p><font size="4">　对于每个询问回答一行，用一个既约分数表示最大的几乎平均数<br />
　　若答案为整数x，输出x/1<br />
</font></p></p><hr/><h3>样例输入</h3><pre>3 2
-2 -1 -2
1 2
1 3

</pre><hr/><h3>样例输出</h3><pre>-3/1
-5/2

</pre><hr/><h3>提示</h3><p><p>数据规模和约定<br />
　　对于所有数据|Si|&lt;=10^6</p>
<p><br />
TEST N Q TEST N Q <br />
1 =10 =10 11 =3*10^4 =10^4 <br />
2 =100 =100 12 =4*10^4 =10^4 <br />
3 =1000 =1000 13 =5*10^4 =10^4 <br />
4 =2000 =2000 14 =6*10^4 =2*10^4 <br />
5 =5000 =5000 15 =7*10^4 =2*10^4 <br />
6 =10^4 =5000 16 =8*10^4 =3*10^4 <br />
7 =10^4 =10^4 17 =9*10^4 =3*10^4 <br />
8 =2*10^4 =5000 18 =10^5 =10 <br />
9 =2*10^4 =10^4 19 =10^5 =3*10^4 <br />
10 =3*10^4 =5000 20 =10^5 =3*10^4</p>
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</p></p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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